noun
danger level; risk level; degree of danger
Used to quantify or describe how dangerous something is, often in safety assessments, weather warnings, or risk evaluations.
この地域の地震の危険度は高い。
The earthquake risk level in this area is high.
台風の危険度が上がっている。
The typhoon danger level is rising.
リスク is a broader term for risk, often used in financial or abstract contexts, whereas 危険度 is more concrete and often used in safety or disaster contexts.
Compound of 危険 (danger) and 度 (degree, level). The exact historical derivation is uncertain, but the word follows a common pattern for forming nouns indicating a measurable degree.